Distal cerebral vasospasm treatment following aneurysmal subarachnoid hemorrhage using the Comaneci device: technical feasibility and single-center preliminary results.

Background: Balloon-assisted mechanical angioplasty for cerebral vasospasm following aneurysmal subarachnoid hemorrhage (aSAH) has a number of limitations, including transient occlusion of the spastic blood vessel. Comaneci is an FDA-approved device for temporary coil embolization assistance which has recently also been approved for the treatment of distal symptomatic refractory vasospasm. We aimed to report the feasibility, efficacy and safety of our experience with Comaneci angioplasty for refractory distal vasospasm (up to the second segment of the cerebral arteries) following aSAH.

Automatic segmentation of deep grey nuclei using a high-resolution 7T magnetic resonance imaging atlas-Quantification of T1 values in healthy volunteers.

We present a new consensus atlas of deep grey nuclei obtained by shape-based averaging of manual segmentation of two experienced neuroradiologists and optimized from 7T MP2RAGE images acquired at (.6 mm) in 60 healthy subjects. A group-wise normalization method was used to build a high-contrast and high-resolution T -weighted brain template (.

T1-Based Synthetic Magnetic Resonance Contrasts Improve Multiple Sclerosis and Focal Epilepsy Imaging at 7 T.

Objectives: Ultra-high field magnetic resonance imaging (MRI) (≥7 T) is a unique opportunity to improve the clinical diagnosis of brain pathologies, such as multiple sclerosis or focal epilepsy. However, several shortcomings of 7 T MRI, such as radiofrequency field inhomogeneities, could degrade image quality and hinder radiological interpretation. To address these challenges, an original synthetic MRI method based on T1 mapping achieved with the magnetization-prepared 2 rapid acquisition gradient echo (MP2RAGE) sequence was developed.

Live birth rates remain stable in modified natural IVF despite low anti-Müllerian hormone: analysis of 638 cycles.

Research Question: Do live birth rates (LBR) following modified natural IVF (mnIVF) differ according to serum anti-Müllerian hormone (AMH) concentration?

Design: Retrospective cohort study including 638 women aged ≤39 years starting their first mnIVF cycle at a university-affiliated private IVF centre. Patients were divided into three groups, by concentration of AMH: ≤0.5 ng/ml (25th percentile), 0.

Relationship between magnetic resonance imaging characteristics and plasmatic levels of MMP2 and MMP9 in patients with recurrent high-grade gliomas treated by Bevacizumab and Irinotecan.

Matrix metalloproteases MMP2 and MMP9 are involved in cancer angiogenesis and invasion. We recently demonstrated that plasma MMP2 and MMP9 levels could both predict response to bevacizumab in patients with recurrent high-grade glioma (HGG). We examined the potential relationship between MMP2/MMP9 plasma levels and glioma imaging characteristics.

Anti-Müllerian hormone (AMH): a reliable biomarker of oocyte quality in IVF.

Purpose: To evaluate the impact of serum AMH levels on stimulated IVF implantation and clinical pregnancy rates.

Methods: •

Design: Retrospective study with multivariate analysis. •

Setting: Clinique ovo (Montreal University affiliated Center).

Primary cough headache, primary exertional headache, and primary headache associated with sexual activity: a clinical and radiological study.

Introduction: The purposes of this study are to describe clinical features of primary cough headache, primary exertional headache, and primary headache associated with sexual activity and to evaluate potential association with abnormalities in the cerebral or cervical venous circulation.

Methods: This multicentre, observational, non-interventional consecutive cohort study included patients fulfilling ICHD-II criteria for primary cough headache (N = 10), primary exertional headache (N = 11), or primary headache associated with sexual activity (N = 20), as well as 16 headache-free controls. Each patient was evaluated clinically and underwent craniocervical MRV of the cranial circulation.

Cerebral Blood and CSF Flow Patterns in Patients Diagnosed for Cerebral Venous Thrombosis - An Observational Study.

Background And Purpose: Recent studies of the organization of the cerebral venous system in healthy subjects using phase contrast magnetic resonance imaging (PC-MRI) show its structural complexity and inter-individual variations. Our objective was to study the venous blood and CSF flows in cerebral venous thrombosis (CVT).

Materials And Methods: PC-MRI sequences were added to brain MRI conventional protocol in 19 patients suspected of CVT, among whom 6 patients had CVT diagnosis confirmed by MR venography.

A phase-contrast MRI study of acute and chronic hydrodynamic alterations after hydrocephalus induced by subarachnoid hemorrhage.

Objective: To determine acute intracranial hydrodynamic changes after subarachnoid hemorrhage (SAH) via phase-contrast MRI (PC-MRI) analysis of the CSF stroke volume in the aqueduct (SVaq) and the foramen magnum (SVfm).

Methods: A prospective PC-MRI study was performed on 34 SAH patients in the acute and late phase. Data on CSF flow and hemorrhage site were analyzed according to acute or chronic hydrocephalus (HC).

Cerebral peritumoral oedema study: does a single dynamic MR sequence assessing perfusion and permeability can help to differentiate glioblastoma from metastasis?

Our purpose was to differentiate glioblastoma from metastasis using a single dynamic MR sequence to assess perfusion and permeability parameters. 24 patients with glioblastoma or cerebral metastasis with peritumoral oedema were recruited and explored with a 3T MR unit. Post processing used DPTools software.

Percutaneous vertebroplasty for pain management in malignant fractures of the spine with epidural involvement.

Purpose: To evaluate the feasibility, efficacy, and safety of percutaneous vertebroplasty (PV) in the treatment of pathologic fractures owing to malignancy with epidural involvement, with or without neurologic symptoms of spinal cord or cauda equina compression.

Materials And Methods: This study was approved by the local ethics committee; informed consent was obtained from all patients. This retrospective review was performed for 51 consecutive patients with metastatic disease or multiple myeloma treated by means of vertebroplasty, who presented with at least one vertebral lesion with epidural involvement, with or without clinical symptoms of spinal cord or cauda equina compression.

[Contribution of phase-contrast MRI to the management of patients with normal pressure hydrocephalus: Can it predict response to shunting?].

The diagnosis and management of patients with idiopathic normal-pressure hydrocephalus (NPH) remain somewhat controversial and there is no clear guideline for assessing the post-shunt outcome. The objective of this study was to investigate whether cerebrospinal fluid (CSF) flow dynamics is linked to post-shunt improvement. Fourteen NPH patients (nine males and five females; mean age, 68 years) investigated by magnetic resonance imaging (MRI) before surgical diversion of CSF were retrospectively reviewed.

Cognitive forms of multiple sclerosis: report of a dementia case.

Cognitive impairment is now well documented in patients with multiple sclerosis (MS), and series of MS patients with predominant cognitive problems have been published recently. We report the observation of a female patient with severe cognitive presentation at the onset of MS, with dramatically demented evolution, and show MRI examination results. We discuss the published reports of primary cognitive types of MS.

A phase-contrast MRI study of physiologic cerebral venous flow.

Although crucial in regulating intracranial hydrodynamics, the cerebral venous system has been rarely studied because of its structural complexity and individual variations. The purpose of our study was to evaluate the organization of cerebral venous system in healthy adults. Phase-contrast magnetic resonance imaging (PC-MRI) was performed in 18 healthy volunteers, in the supine position.

Intracranial lipomas: clinical appearances on neuroimaging and clinical significance.

Intracranial lipomas are rare congenital malformations which are neither hematomas nor true neoplasms. They result from the abnormal persistence and maldifferentiation of the meninx primitiva. The majority of such lesions occur near the midline.

Epistaxis revealing the rupture of a carotid aneurysm of the cavernous sinus extending into the sphenoid: treatment using an uncovered stent and coils. Review of literature.

True carotid aneurysms with sphenoid extension and revealed by epistaxis are rare. A review of the literature shows the mortality risk of this pathology and the different therapeutic options. A 41-year-old female presented with a cavernous carotid aneurysm with sphenoid extension revealed by massive epistaxis.

Controlled segmental balloon kyphoplasy: a new technique for patients with heterogeneous vertebral bone density.

Study Design: Case series.

Objective: To describe a novel kyphoplasty procedure that gives uniform bone expansion in treatment of vertebra with heterogeneous bone structure.

Summary Of Background Data: Balloon kyphoplasty is used to treat vertebral compression fractures by restoring vertebral height and correcting kyphosis before the injection of bone cement that stabilizes the fracture.

Respective contributions of vertebroplasty and kyphoplasty to the management of osteoporotic vertebral fractures.

Among individuals aged 50-80 years, 5-20% have one or more vertebral crush fractures. One-third of these patients require treatment for acute or chronic pain. Vertebroplasty and kyphoplasty were introduced over the last two decades as treatments for incapacitating pain from osteoporotic vertebral fractures.

MRI location of the distal dural ring plane: anatomoradiological study and application to paraclinoid carotid artery aneurysms.

The distal dural ring plane (DDRP) separates the intradural from the extradural paraclinoid internal carotid artery. The purpose of this study was to evaluate its position with MR imaging. The protocol used a T2-weighted sequence in two orthogonal planes: diaphragmatic (DIA-P) and carotid (CAR-P).